thomas ernest leigh



J. w. COOK, LIE- LEIGH AND J. JOWETT. APPARATUS FOR STRIPPING CABDING ENGINES.

2 SHEETS-SHEET l.-

Patented May 13, 1919,.

II I ll nae.

APPLICATION FILED SEPT-12.1916

IN \/EINTE1 R5 fiTF J. W. COOK, T. E. LElGH AND.L JOWETT. APPARATUS FOR STRIPPING CAHDING ENGINES.

APPLICATION mao sgpr. 12; 1916. 1,303,538, Patented May'13, 1919.- '2 smears-swan 2.

INMENTDgE:

ATFEIFNEYE IE Norm Pzrzns CO,PHU10 LITHO.,WASNINGTON. n. c.

UNITED STATES PATENT OFFICE.

JOHN w. 000K, THOMAS ERNEST LEIGH, AND JOHN J'OWETT, OE MANCHESTER, ENGLAND.

APPARATUS FOR STRIPPING CARDING-ENGIN ES.

Specification of Letters Patent,

Patented May 13, 1919.

Application filed September 12, 1916. Serial No. 119,644.

To all whom it may concern:

Be it known that we, JOHN WILLIAM COOK, THOMAS ERNEST LEIGH, and JOHN JowE'r'r, trading as COOK AND COMPANY, subjects of the King of Great Britain and Ireland, whose post-oflice address is 18 Exchange street, Manchester, in the county of Lancaster, England, have invented certain Improvements in or Relating to Apparatus for Stripping Carding-Engines, of which the following is a specification.

This invention relates to improvements in vacuum stripping apparatus for operating upon the cylinders of carding engines employed in the preparation of textile fibers and has particular reference to that type of device in which a vacuum is produced at a point close to the card wire by the exhaustion of air through a traversing nozzle, the dirt, short fibers, or other similar extracted matter passing through the latter to a suitable receptacle or point of discharge. The nozzle is traversed across the cylinder by a double-threaded screw engaging a crutchedshaped member supported by the carriage carrying the nozzle.

In apparatus of this kind the crutch shaped member is adapted to engage with the threads of a double-threaded screw and alteration from one to the other is efl'ected by artially rotating the crutchshaped member about the axis of its shank, which is radial to the axis of the double-threaded screw. This arrangement is, however, open to objection on account of the liability of the crutch-shaped member to accidentally rotate and thereby to change from one screw thread to the other with the result that after the nozzle has traversed, say, half the distance across the surface of the cylinder or dofl'er being stripped the accidental changiiig from one thread to the other may take place and the traversing nozzle may return to its initial position after only half the dofler cylinder has been stripped.

Another feature in the old type of apparatus is that the nozzle when used in connection with the dofi'er cylinder has been so supported from the screw traversed carriage that its overhanging weight has created a considerable amount of friction between the crutch-shaped member and screw and likewise between the former and the sides of the slot of the traversing'carriage to which it is plvoted and in which it is moved to engage and disengage it from the screw. In addition the manner of pivotally mounting the nozzle is such that when the latter is dropped from non-working to working positlon the energy of the overhanging parts on impact with the stop or stops disarranges the setting of the suction end of the nozzle with relation to the said wire surface of the 'dofler being stripped and either impairs the working of the device or tends to'injure the card wire points, or both.

The object of our invention is to overcome theforegoing defects and in the first place conslsts in the provision of a traversmg screw having either a left or right hand thread in place of the double-threaded screw (though the latter may still be employed if required) previously referred to and a traversmg carriage provided with a rocking pawl having separate engaging members for the screw, only one of which members can be engagedwith the screw thread at a time and means for operating the engaging member or members. In the second place our in ventlon consists in supportin and guiding the nozzle from the dofler rai or its equivalent or in oither words at a point substantially close to the card wire surface of the dofler.

In the accompanying drawings Figure 1 is a front elevation showing one construction of traversing mechanism according to this invention. 4

Fig. 2vsectional plan of the nozzle-carrying carriage. L v Fig. 3 front elevation of the improved nozzle-supporting means and Fig. 4 end elevation of same.

A (Figs. 1 and 2) is a suction nozzle, which is connected to vacuum-producing means in the usual way; B is a carriage carrying the nozzle and mounted upon a tubular support C that extends across the face of the carding cylinder or dofler; and

D is a right or left-handed or double-thread ed screw mounted within the support C carried by end brackets al and adapted to be rotated therein by means of a driving pulley D.-

The nozzle-carrying carriage B comprises a cylindrical part or sleeve B adapted to slide upon the tubular support C while 6 is a rocking pawl having separate members 6 b for engaging with the screw D. b is a ring of felt or the like at each end of the carriage B.j The pawl 12 is adapted to rock about a pivot pin 6 in order that either the member I) or the member 6 may come into engagement with the screw D, the tubular support C being formed with a longitudinal slot C to enable the said engagement to take place. The pivot pin 6 is formed with an extension 12* adapted at one end of a traverse to come into contact with a bar or projection 6 whereby the pawl b is rocked about its pivot pin 6 and one of the. mem hers I) 6 moved out of engagement with the screw thread. The nut or pawl b is pivoted at b and there is suflicient play between the sides of the slot 0 and the sides of the nut to allow the traversing carriage B to be moved circumferentially about the tube C within limits.

We may in. some constructions only use one of the engaging members I) or 12 After completing its traverse from one side of the carding engine to the other, the carriage B may be returned by the operator to the starting or any intermediate point bysliding it along-the tubular member C, the engaging members I) and b beingthen -in, the position shown in Fig. 2 out of engagement with the screw D.

It will be obvious that more than one nozzle may be applied simultaneously to the same cylinder or dofi'er in which case the thread-engaging members of the difi'erent nozzle carriages are actuated at any different points situated conveniently along the length of the cylinder or dofier being stripped.

Referring to Figs. 3 and 4 we support and guide the suction nozzle A from the dofier rail f or its equivalent that is to say the point of support and guidance is substantially close to the mouth of the suction nozzle and the surface a being acted-upon. Thecarriage c-with the nozzle can be turned about the supporting tube 1) within limits as aforesaid, tov enable the face hto bear freely against the front of the railf which const'itutes a locating or guiding and supporting surface. Atthe sametime the nut bl isout of engagement with the, sides of the lot 0 of the tube 0; The nozzle A, as in the embodiment of our invention india ed in t drawi gs, s provided with a ma hined ac 9' kbea f. eams: h

chined edge of the doifer rail 7. The nozzle tube A is clamped in a bracket 2' (forming part of the carriage B) fitted with a removable cap j which allows for adjustment of the nozzle mouth with relation to the surface being operated upon.

From the foregoing description it will be readily understood that the nozzle is well supported and guided at a point close to that at which its suction mouth is applied to the surface of the doffer cylinder.

lVhat we claim as our invention is l. Stripping mechanism of the character described comprising an actuating screw, a guide parallel with said screw, a carriage mounted to travel on said guide, a pawl mounted on a pivot arranged transversely of the guide and provided with a screw-engaging portion, an actuator con nected with said pawl, and means interposed in the path of said actuator as it travels with the carrier to trip the same whereby the pawl is rocked on its pivot.

2. Stripping mechanism of the character described comprising an actuating screw, a guide parallel with said screw, a carriage mounted to travel on said guide, a pawl pivoted between its ends 011 a pivot arranged 1 tuator to trip the pawl.

3. Stripping mechanism of the character described comprising an actuating screw, a

, guide parallel with the screw, a carriage mounted to travel on said guide, a pawl provided with a pivot mounted transversely in the guide, said pawl also having a screwengaging portion, an actuator arm attached to said pivot, and means interposed in the path of the actuator as it travels with the carrier, to trip the same whereby the pawl is rocked.

4. Stripping mechanism of the character described comprising an actuating screw, a guide parallel with said screw and provided with a longitudinal slot over the screw, a carriage mounted to travel on said guide, a pawl attached to a pivot arranged transversely of the guide, said pawl having screwengaging portions, an actuator connected with said pivot, and means interposed in the path of said actuator as it travels with the carrier, to trip the same whereby the pawl is rocked.

5. Stripping mechanism of the character described comprising a guide, a carriage mounted thereon and free to have limited circumferential play, means for causing the carriage to travel on the guide, a dofi'er rail parallel with the guide, and a suction nozzle clamped to the carriage and havingan extension bearing against said doffer rail.

6. Stripping mechanism of the character In testimony whereof We have aiiixed our 10 described comprising a guide, a carnage signatures, in presence of two witnesses. mounted thereon andfree to have limited J W COOK circumferential play means for eausin the 7 carriage to travel on the guide, a doifei rail THOMAS ERNEST LEIGH parallel with the guide, and a suction nozzle clamped to the carriage and having an ex- Witnesses: tension provided with a widened portion AMY EVELINE Evms, bearing on said rail. ELDON ALFRED KING.

Uopies or this patent may be obtained for five cents each, by addressing the Commissioner of Iatents, Washington, D. 0.

JOHN J OW'ETT. 

